—– Original Message —–
Sent: Friday, August 11, 2000 8:02 AM
Subject: Re: Puzzled about pressure casting
> this is a good topic of discussion for the group, I have always found the
> hydrostatic casting to go against what i have been taught. as you need to
> retain the shape of the limb no have the limb take the shape of the insert
> also look at the definition of hydrostatic and try to incorporate it into
> the pressure casting method and i don’t see where it is as hydrostatic
> of or relating to fluids at rest or the pressures the emit or transmit, i
> have been a big advocate of vacuum casting since the mid 80’s and have
> to have much greater success
> just my thoughts
> Steve Smith
> —– Original Message —–
> Sent: Friday, August 11, 2000 5:39 AM
> Subject: Puzzled about pressure casting
> > Dear Colleagues,
> > While the concept of hydrostatic sockets is appealing from the
> > evenly distributed forces, as soon as the pt loses volume distally, it
> > seem you have lost that advantage and are back to the kinds of
> > techniques used in a standard total surface bearing socket- and
> > necessarily obtaining true hydrostatic support and blurring the
> > between “hydrostatic” and total surface bearing.
> > In addition, most of the pressure cast sockets I have seen are very
> > and seem to be more prone to rotation.
> > I have no doubt that people are getting good results, especially
> > It just seems that the theory breaks down once volume has been lost- In
> > case it seems better to start out with a total surface bearing socket
> > with contours that prevent rotation.
> > I am presenting these ideas for discussion and would like to know how
> > successful users of the pressure casting system would address them. The
> > simplicity and speed of the system is appealing….
> > Also, is there a profile for those who might be more optimal candidates
> > this pressure casting technique?
> > Gerald Stark CPO presented an excellent paper at the last Academy
> > discussing different casting techniques. I wasn’t at the meeting but
> > are the types of ideas and papers where it would be beneficial to have
> > discussions with questions from the audience
> > Mark Benveniste CP